Design and Performance Analysis of Yielding Anchor Bolt with Large Deformation

Zhi Ming Jiang; Cheng Jun Wang; Tao He

doi:10.4028/www.scientific.net/AMM.215-216.21

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 215-216Design and Performance Analysis of Yielding Anchor...

Design and Performance Analysis of Yielding Anchor Bolt with Large Deformation

Abstract:

According to the principle of the spring constant support device, a kind of large deformation yielding anchor bolt with three elongation properties has been designed. This paper analyzes the performance of the dynamically-pressured soft rock roadway surrounding rock and support mechanism of yielding anchor, carries out the force analysis of the anchor head, derives equation of the knife-type cam and uses Matlab programming to solve the knife -shaped cam contour curve. In the condition of keeping certain anchoring force, the anchor head can produce large displacement along the anchor body in order to decrease the pressure. And after the pressure of surrounding rock relief, the anchor head can move back to add pressure to form a “Loose - support”cycle of flexible supporting.

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Periodical:

Applied Mechanics and Materials (Volumes 215-216)

Pages:

21-26

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.215-216.21

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Online since:

November 2012

Authors:

Zhi Ming Jiang, Cheng Jun Wang, Tao He

Keywords:

Design, Dynamically-Pressured Soft Rock Roadway, Roadway Supporting, Yielding Anchor Bolt

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